172229425 has 12 divisors (see below), whose sum is σ = 213748720. Its totient is φ = 137664720.

The previous prime is 172229419. The next prime is 172229429. The reversal of 172229425 is 524922271.

It is a happy number.

It is not a de Polignac number, because 172229425 - 2⁹ = 172228913 is a prime.

It is a super-4 number, since 4×172229425⁴ (a number of 34 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (172229429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 37294 + ... + 41656.

Almost surely, 2^172229425 is an apocalyptic number.

It is an amenable number.

172229425 is a deficient number, since it is larger than the sum of its proper divisors (41519295).

172229425 is a wasteful number, since it uses less digits than its factorization.

172229425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5952 (or 5947 counting only the distinct ones).

The product of its digits is 20160, while the sum is 34.

The square root of 172229425 is about 13123.6208799249. The cubic root of 172229425 is about 556.3769343782.

The spelling of 172229425 in words is "one hundred seventy-two million, two hundred twenty-nine thousand, four hundred twenty-five".